résolu

bonjour pouvez vous maider svp a developper les expressions suivantes : merci
a=3-4x(5-2)
b=3x4-2x(4-1)
d=3+(1-5)x(-6)
e=1-2x3+4x(-5)
c=5-2x3+2x7
f=1+(-2)au carré -(-3)au carré

Répondre :

a= 3-4x3=3-12=-9
b= 12-2x3=12-6=6
d= 3+(-4)x(-6)=3+24=27
e= 1-6+(-20)=1-6-20=-25
c = 5-6+14=-1+14=13
f = 1+4-9=-4
winner123
a=3-4x(5-2) = 3-20+8 = -20 +11 = -9
b=3x4-2x(4-1) = 12 - (8 -2) = 12 -8+2 = 14 -8 = 6
d=3+(1-5)x(-6) = 3 + -4 x -6 = 3 +24 = 27
e=1-2x3+4x(-5) = 1 - 6-20 = -25
c=5-2x3+2x7 = 5 -6 +14 = 19 -6 = 13
f=1+(-2)au carré -(-3)au carré = 1+4-(+9) = 5-9 = -4

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